Midea MCH5U-48PHH2

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8.4.1.4 Indoor fan speed malfunction diagnosis and solution.
Malfunction conditions
When indoor fan speed is too low (300RPM) for a certain period of time,
the unit ceases operation and the LED displays a failure code.
Potential causes
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Wiring mistake
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Faulty fan assembly
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Faulty fan motor
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Faulty PCB
Trouble shooting: